A supernova (pl.: supernovae) is a powerful and luminous explosion of a star. A supernova occurs during the last evolutionary stages of a massive star, or when a white dwarf is triggered into …

Dec 24, 2025 · supernova, any of a class of violently exploding stars whose luminosity after eruption suddenly increases many millions of times its normal level. The term supernova is …

3 days ago · Supernova formation ends a star lifecycle, dispersing heavy elements and shaping galaxies, from neutron stars to black holes across cosmic history.

2 days ago · Most distant supernova: James Webb sees a star explode at cosmic dawn JWST has revealed a stellar explosion from the universe’s childhood, and it looks astonishingly …

Oct 3, 2025 · What is a supernova explained simply? Learn how stars explode, the types of supernovae, what they leave behind, and the most famous supernovae in history.

What is a supernova? Learn how massive stars explode, the types of supernovae, and the famous cosmic events captured by astronomers.

Mar 30, 2025 · A supernova is not just a star’s death—it is a dramatic event that reshapes the cosmos. These cosmic explosions are responsible for creating the elements that make up the …

Sep 25, 2025 · A supernova of a star more than about 10 times the size of our sun may leave behind the densest objects in the universe— black holes. The Crab Nebula is the leftover, or …

5 days ago · An international team of astronomers has achieved a first in probing the early universe, using the James Webb Space Telescope (JWST), detecting a supernova—the …

Dec 20, 2025 · An international team of astronomers has, for the first time, successfully probed the early universe. An international group of astronomers has reached a new milestone in …